311103111031 has 12 divisors (see below), whose sum is σ = 328377423000. Its totient is φ = 294694540848.

The previous prime is 311103111013. The next prime is 311103111071. The reversal of 311103111031 is 130111301113.

It is not a de Polignac number, because 311103111031 - 2¹³ = 311103102839 is a prime.

It is a super-2 number, since 2×311103111031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311103110996 and 311103111014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311103111071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3328900 + ... + 3421078.

It is an arithmetic number, because the mean of its divisors is an integer number (27364785250).

Almost surely, 2^311103111031 is an apocalyptic number.

311103111031 is a deficient number, since it is larger than the sum of its proper divisors (17274311969).

311103111031 is an equidigital number, since it uses as much as digits as its factorization.

311103111031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101566 (or 101547 counting only the distinct ones).

The product of its (nonzero) digits is 27, while the sum is 16.

Adding to 311103111031 its reverse (130111301113), we get a palindrome (441214412144).

The spelling of 311103111031 in words is "three hundred eleven billion, one hundred three million, one hundred eleven thousand, thirty-one".